THE SYNTHESIS OF 3'''',E''''-ALKYLENEDIOXY-ISOFLAVONE ANALOGS

ＴＨＥＳＹＮＴＨＥＳＩＳＯＦ３＇，Ｅ＇－ＡＬＫＹＬＥＮＥＤＩＯＸＹ－ＩＳＯＦＬＡＶＯＮＥＡＮＡＬＯＧＳ￥ＬｉｎｇＨｕａＣＡＯ（ＣｈｅｍｉｓｔｒｙＤｅｐａｒｔｍｅｎｔｏｆＸｉｎｊｉａｎｇＵｎｉｖｅｒｓｉｔｙ，Ｕｒｕｍｐｅ，８３００４６）Ａｂｓｔｒａｃｔ...     

CONFORMATION ANALYSIS OF GUANOSINE-5''''-DIPHOSPHO-FUCOSE

ＣＯＮＦＯＲＭＡＴＩＯＮＡＮＡＬＹＳＩＳＯＦＧＵＡＮＯＳＩＮＥ－５＇－ＤＩＰＨＯＳＰＨＯ－ＦＵＣＯＳＥＭｉｎＢｏＣＨＥＮ；ＹｕＬＩＵ；ＺｈｏｎｇＷｕＧＵＯ；ＧｅＱｉｎｇＣＡＩ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＣｒｇａｎｉｃｏｆＯｒｇａｎｉｃＣｈ...     

SiO_2-SUPPORTED HRh(DPPE)_2 GATALYST

ＳｉＯ_２－ＳＵＰＰＯＲＴＥＤ ＨＲｈ（ＤＰＰＥ）_２ ＧＡＴＡＬＹＳＴ￥ＣｈａｎｇＰｉｎｇＳＨＡＯ；ＪｉｅＹｕＷＡＮＧａｎｄＨｅＦｕＧＵＯ（ＤａｌｉａｎＩｎｓｔｉｔｕｔｅｏｆＣｈｅｍｉｃａｌＰｈｙｓｉｃｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃ...     

The Effect of CaAl_2O_4 Spinel on Ni/Al_2O_3 Catalyst for CH_4/O_2-to-Syngas Reaction

ＴｈｅＥｆｅｃｔｏｆＣａＡｌ２Ｏ４ＳｐｉｎｅｌｏｎＮｉ／Ａｌ２Ｏ３ＣａｔａｌｙｓｔｆｏｒＣＨ４／Ｏ２－ｔｏ－ＳｙｎｇａｓＲｅａｃｔｉｏｎ１）ＬＵＹｏｎｇＬＩＵＹｕＳＨＥＮＳｈｉｋｏｎｇ（ＬａｎｚｈｏｕＩｎｓｔｉｔｕｔｅｏｆＣｈｅｍｉｃａｌＰｈｙｓｉｃ...     

CHIRAL SYNTHESIS OF YASHABUSHIKETOL

ＣＨＩＲＡＬＳＹＮＴＨＥＳＩＳＯＦＹＡＳＨＡＢＵＳＨＩＫＥＴＯＬ￥ＨｅＺＨＡＯａｎｄＹｕＬｉｎＷＵ（ＳｔａｔｅｋｅｙＬａｂｏｒａｔｏｒｙｏｆＢｉｏ－Ｏｒｇａｎｉｃ＆ＮａｔｕｒａｌＰｒｏｄｕｃｔｓＣｈｅｍｉｓｔｒｙ，ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏ...     

STUDIES ON MACROCYCLIC DITERPENOIDS（Ⅻ）──A Convergent and Stereoselective Synthesis of Sarcophytol－Q Precursor──（11S）－3，7，11，15－Tetramethyl－11－Hydroxy－14－Oxo－3E，7E，12E－Hexadecatrienal

ＳＴＵＤＩＥＳＯＮＭＡＣＲＯＣＹＣＬＩＣＤＩＴＥＲＰＥＮＯＩＤＳ（Ⅻ）──ＡＣｏｎｖｅｒｇｅｎｔａｎｄＳｔｅｒｅｏｓｅｌｅｃｔｉｖｅＳｙｎｔｈｅｓｉｓｏｆＳａｒｃｏｐｈｙｔｏｌ－ＱＰｒｅｃｕｒｓｏｒ──（１１Ｓ）－３，７，１１，１５－Ｔｅｔｒａｍｅｔ...     

STUDY ON SYNTHESIS，CHARACTERIZATION AND CATALYSIS OF PILLARED ANION CLAY（Ⅲ）──SYNTHESIS OF ZnAl－BW_（11）O_（39）Z（H_2）~（n－）

ＳＴＵＤＹＯＮＳＹＮＴＨＥＳＩＳ，ＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＡＮＤＣＡＴＡＬＹＳＩＳＯＦＰＩＬＬＡＲＥＤＡＮＩＯＮＣＬＡＹ（Ⅲ）──ＳＹＮＴＨＥＳＩＳＯＦＺｎＡｌ－ＢＷ_（１１）Ｏ_（３９）Ｚ（Ｈ_２）~（ｎ－）ＴｈａｎｋｓｆｏｒｔｈｅｓｕｐｐｏｒｔｏｆＦｏｕｎｄａｔｉｏｎｏｆＣＥＣａｎｄｔｈｅｏｐｅｎｌａｂｏｆＨｙｄｒｏｔｈｅｒｍａｌＳｙｎｔｈｅｓｉｓｉｎＪｉｎｎＵｎｉｖｅｒｓｉｔｙｅｄｄｉｆｆｅｒｅｎｔｋｉｎｄｓｏｆｔｒｉｈｅｔｅｒｏｐｏｌｙｏｘｏｍｅｔａｌａｔｅ（ＴＨ＇ＰＯＭｓ）ｔｏｔｈｅＺｎＡＩｌａｙｅｒｅｄｃｌａｙｓ，ｕｓｉｎｇｔｈｅｅｓｔｅｒｉｆｉｃａｔｉｏｎｏｆｎ－ｂｕｔｙｌａｌｃｏｈｏｌａｎｄａｃｅｔｉｃａｃｉｄａｓｐｒｏｂｅｒｅａｃｔｉｏｎ．ａｎｄｆｏｕｎｄｔｈａｔｔｈｅｐｉｌｌａｒｅｄｃｏｍｐｏｕｎｄｓｗｅｒｅｍｏｒｅａｃｔｉｖｅａｎｄｓｅｌｅｃｔｉｖｅｔｈａｎｔｈｅｓｏｌｉｄａｃｉｄｃａｔａｌｙｓｔｓｓｕｃｈａｓａｃｉｄｉｃｉｏｎ－ｅｘｃｈａｎｇｅｒｅｓｉｎｓｌ４］．Ｏｎｔｈｅｂａｓｉｓｏｆｐｒｅｖｉｏｕｓｗｏｒｋ．ｗｅｎｏｗｅｎｃａｐｓｕｌａｔｅｔｒｉｈｅｔｅｒｏｐｏｌｙｏｘｏｍｅ     

A Study of Synthesis, Immobilization and Catalytic Capability of Metalloporphyrin

ＡＳｔｕｄｙｏｆＳｙｎｔｈｅｓｉｓ，ＩｍｍｏｂｉｌｉｚａｔｉｏｎａｎｄＣａｔａｌｙｔｉｃＣａｐａｂｉｌｉｔｙｏｆＭｅｔａｌｏｐｏｒｐｈｙｒｉｎ＊ＷＡＮＧＸｉｎｇ－ｑｉａｏ＊＊，ＧＡＯＳｈｕａｎｇ，ＣＡＣｈａｎｇ－ｓｈｅｎｇＹＵＬｉａｎ－ｘｉａｎｇ，Ｇ...     

DIELS-ALDER REACTIONS CATALYZED BY MISCH-LANTHANIDE CHLORIDES

ＤＩＥＬＳ－ＡＬＤＥＲＲＥＡＣＴＩＯＮＳＣＡＴＡＬＹＺＥＤＢＹＭＩＳＣＨ－ＬＡＮＴＨＡＮＩＤＥＣＨＬＯＲＩＤＥＳ￥ＳｈｕＷｅｎＹＵ；ＳｈｉＪｉａｎＬＩＡＯａｎｄＤａｏＲｏｎｇＹＵ（ＤａｌｉａｎＩｎｓｔｉｔｕｔｅｏｆＣｈｅｍｉｃａｌＰｈｙｓｉｃｓ，Ｃｈ...     

C_(19)-DITERPENOID ALKALOIDS OF DELPHINIUM MOLLIPILUM

Ｃ_（１９）－ＤＩＴＥＲＰＥＮＯＩＤＡＬＫＡＬＯＩＤＳＯＦＤＥＬＰＨＩＮＩＵＭＭＯＬＬＩＰＩＬＵＭ￥ＳｕｏＭｉｎｇＺＨＡＮＧ；ＱｉｎｇＹｕＯｕ（ＬａｎｚｈｏｕＩｎｓｔｉｔｕｔｅｏｆＣｈｅｍｉｃａｌＰｈｙｓｉｃｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉ?..     

ChemInform Abstract: Conformations and Thermodynamic Properties of Sulfur Homocycles. Part 1. The S5, S6, S7, and S8 Molecules.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

S-, S,S-, S,S,S- Und N,S-Substituierte Dienverbindungen Und Dibutadienylpiperazinverbindungen Von 2-Nitropentachlorbutadien

Nitrodiene compound 1 was stirred with allylthiol for a long time and compound 3 was obtained. Compound 1 gave bis(thio)substituted 2-nitrodiene compound 4 and tris(thio)substituted 2-nitrodiene compound 5 with 2 moles allylthiol in the presence of NaOH in ethanol. Mono(allylthio)substituted diene compound 3 gave dibutadienyl substituted piperazine compounds with piperazine 6 in CH 2 Cl 2 (or diethylether). Compound 3 gave compound 9 with compound 8 . Compounds 11a-e have been obtained from the reaction of compound 3 with compounds 10a-e . Nach langem Rühren von der Verbindung 1 mit Allylthiol entsteht die Verbindung 3 . Die Verbindung 1 liefert mit zwei Mol von Allylthiol in ethanolischer Natronlunge die bis(thio)substituierte 2-Nitrodienverbindung 4 und tris(thio)substituierte Dienverbindung 5 . Mono(allylthio)substituierte Dienverbindung 3 ergibt mit Piperazine in CH 2 Cl 2 (oder in Ether) die dibutadienylsubstituierte Piperazinverbindung 7 . Die Verbindung 3 liefert mit der Verbindung 8 die Verbindung 9 . Durch die Reaktion von der Verbindungen 10a-c wurden die Verbindungen 11a-e erhalten.     

Efficient Chemoselective Mild Deprotection of S,Sand S,O-Acetals and Ketals with Electrophilic Halogens

A novel and simple method for the chemoselective deprotection of S,S- and S,O-acetals and ketals in the presence of their O,O-analogs with electrophilic halogens to their corresponding carbonyl compounds is described using N-bromosuccinimide, N-chlorosuccinimide, 2,4,4,6-tetrabromo-2,5-cyclohexen-1-one, trichlorocyanuric acid, or molecular bromine in aqueous acetonitrile. The use of these reagents in the presence of hydrated silica gel provide efficient, novel, and mild procedures for the deprotection of cyclic and acyclic O,O-, S,S-, and S,O-acetals and ketals in excellent yields in short reaction times.     

Zinkkomplexe des chelatisierenden N,S,S-Liganden N-(2-Mercaptoethyl)-2-mercaptoanilin

Zinc Complexes of the Chelating N,S,S Ligand N-(2-Mercaptoethyl)-2-mercaptoaniline The organic compound N-(2-mercaptoethyl)-2-mercaptoaniline (LH₂) which as a ligand offers two SH functions, which can be deprotonated, and one NH donor function was prepared by a new method. Its reaction with zinc salts yielded the 1:1 complex ZnL. The structure analysis identified the complex as a molecular tetramer with bridging thiolate groups, a tetrahedral ZnNS₃ coordination, and a step-like Zn₄S₄ ring as the central structural unit. Attempts to break up the tetramer by addition of coligands were successful only for 2,2′-bipyridine which produced the complex LZn · bipy.     

ChemInform Abstract: Structure of the Adducts S2F10, S2F11 and Their Anions

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.     

Complexation of [S,S,S]- and [R,S,R]-isomers of N-bis [2-(1,2-dicarboxyethoxy)ethyl] aspartic acid with Mg(II), Ca(II), Mn(II), Fe(III), Cu(II) and Zn(II) ions in aqueous solution

In a search for environmentally friendly metal chelating ligands for industrial applications, the protonation and complex formation equilibria of [S,S,S]- and [R,S,R]-isomers of N-bis[2-(1,2-dicarboxyethoxy)ethyl] aspartic acid (BCA6) with Mg(II), Ca(II), Mn(II), Fe(III), Cu(II) and Zn(II) ions in aqueous 0.1 M NaCl solution were studied at 25°C by potentiometric titration. The model for complexation and the stability constants of the different complexes were determined for each metal ion using the computer program SUPERQUAD. With all metal ions (M ⁿ⁺), stable ML ^n?6 complexes dominated complex formation for both isomers. Differences in complexation models were found for binuclear species.     

Charge‐Transfer Complexes Between the Sulfur Molecules SO2, S2O,S3, SONH,and SOCl2 and the Amine Donors NH3 and NMe3 — A theoretical Study

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.     

On the Electronic States of S4+ and S4‐ Isomers.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.